public class E3_5 {
	public static void main (String args[]){
		int [] a={10,20,30,40},b[]={{1,2},{4,5,6,7}};
		b[0]=a;
		b[0][1]=b[1][3];
		System.out.println(b[0][3]);
		System.out.println(a[1]);
	}
}